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RFORK_THREAD(3) FreeBSD Library Functions Manual RFORK_THREAD(3)
NAMErfork_thread -- create a rfork-based process thread
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS#include <unistd.h>
pid_trfork_thread(intflags, void*stack, int(*func)(void*arg), void*arg);
DESCRIPTIONTherfork_thread() functionhasbeendeprecatedinfavorof
pthread_create(3).
The rfork_thread() function is a helper function for rfork(2). It
arranges for a new process to be created and the child process will call
the specified function with the specified argument, while running on the
supplied stack.
Using this function should avoid the need to implement complex stack swap
code.
RETURN VALUES
Upon successful completion, rfork_thread() returns the process ID of the
child process to the parent process. Otherwise, a value of -1 is
returned to the parent process, no child process is created, and the
global variable errno is set to indicate the error.
The child process context is not aware of a return from the
rfork_thread() function as it begins executing directly with the supplied
function.
ERRORS
See rfork(2) for error return codes.
SEE ALSOfork(2), intro(2), minherit(2), rfork(2), vfork(2), pthread_create(3)HISTORY
The rfork_thread() function first appeared in FreeBSD 4.3.
FreeBSD 10.1 February 6, 2011 FreeBSD 10.1